Anyone know how the Mexican mint struck these? I just thought about it this morning, how they are so silvery when BU, but quickly become brown. Did they surface enrich the flans before striking? Btw ancient guys, this is an example of ancient/world crossover. I am wondering if anything is to be learned from the striking of thse coins versus the striking of late roman low silver coins.
I'm wondering the same.... anybody? Maybe surface enrichment like the ancient tet Doug has that shows it well... it had Horn Silver that was cleaned off and looked like it was Fouree.
